Dust-guard.



No. 742,907. PATENTED NOV. 3, 1903.

W. M. RYAN.

* DUST GUARD.

.APPLICATION FILED DEO.24,1901.

N0 MODEL.

.Ill ||II i 'lL-lm IIIIHIH Patented November 3, 1903.

PATENT OFFICE.

IVILLIAM M. RYAN, OF PULLlVIAN, ILLINOIS.

DUST-GUARD.

SPECIFICATION forming part of Letters Patent No. 742,907, dated November 3, 1903. Application tiled December 24,1901. Serial No. 87.127. (No model.)

T0 all whom t may concern:

Be it known that I, WILLIAM M. RYAN, a citizen of the United States, residing at Pullman, Cook county, Illinois, have invented certain new and useful Improvements in Dust-Guards, (Case No. 2,) of which the following, taken in connection with the accompanying drawings, is a specification.

This invention has reference to dust-guards such as are employed most commonly on carjournals to protect the same against the entry of dirt or foreign matter which would tend to injure or heat the bearings. It is designed to improve in ease of operation, efiiciency, and durability the dust-guard disclosed in my former patent, No. 646,462, of April 3, 1900.

The first of the objects of this invention is the provision of a dust-guard provided with a plurality of segments, one or more of which are constructed of a metal body portion having a relatively soft wearing-surface formed of some substance such as Wood or fiber.

Another object of this present invention is the provision of a dust-guard having segments held together by rods and a spring-pressure, with pockets for the same, which are closed against the outside to prevent the entry therein of grease or other foreign matter, such as would interfere with the spring action.

The above, as well as such other objects as may hereinafter appear, I attain by means of a construction which I have illustrated in preferred form in the accompanying drawings, in whichy Figure 1 is a vertical section showing my improvement applied to a journal-box, such section being taken on the line 1 of Fig. 2.

Fig. 2 is a section taken on the line 2 of Fig.`

1, showing the parts on a horizontal sectional plane. Fig. 3 is a side elevation of my improved form of dust-guard with the several segments assembled in position. Fig. 4 is a sectional view through the same, showing the relative arrangement of the rods and springs which form the devices for holding the parts together. Fig. 5 is an interior edge elevation of one of the segments. Fig. 6 is a detail section taken on the line 6 of Fig. 4, and Fig. 7 is a view in perspective of an improved form of dustguard segment forming one part of my invention.

By reference to Figs. 3 and 4 particularly accommodation of the rod 12.

it will be seen that in carrying out myinvention I provide a guard constructed primarily of side' pieces S and 9, between which I embrace wedge pieces or segments 10 and 1l, the whole being secured in position by means of rods l2, held by springs 13, housed in springpockets 14, which are closed after the rods and springs are put in place by means of a small plug 15, glued or otherwise securely fastened in the opening to prevent the entry of dirt and the disarrangement of the spring or interference with its action which would be caused thereby. The wedge-segments 10 and 1l are made in two parts, as clearly shown in Figs. 6 and 7, the wearing-section 16 being of some soft material-such, for example, as wood or fiber-combined with or fastened to a metal body portion 17, the connection between the two being preferably made by a dovetail joint, as shown at 18 in Fig. 6. The metal part 17 is formed with a slot or opening 19 to accommodate the rod 12 and has its side faces,`which engage with the corresponding faces or edges of the side pieces 8 and 9, formed of wedge shape, as heretofore known in the art, so that as the spring pulls upon the rod 12 the side pieces 8 and 9 will be drawn inward, so as to press against the. axle, and the wedge-segments 10 and 11 will at the same time be pushed against the axle by the operation of the wedge-surfaces. It willl be obvious that the body portions of the wedgesegments used in my present improvement being of metal, there will be a better sliding action of the same upon the side pieces, and consequently a freer action of the guard in following up the wear upon the axle, than is the case where wedge-segments made entirely of wood have been used, as has been the prior practice. Another advantage of my improved combination wedge-segments is that they are less liable to be broken than those made entirely of wood or ber or like material, since the points of the wedge-segments, which are on account of limited space necessarily rather small, have a tendency in those made of soft material to break off, especially because of having to be provided with the slot 19 for the In constructing the part 17 of the wedge-segment of metal this difficulty is entirely obviated.

Having thus described my'inventiomwhat I claim as new, and desire to secure by Letters Patent, is-

1. In a dust-guard the combination of two non-metallic side wearing-pieces, connectingrods and springs pressing the side pieces together, and wedge-sections between the side pieces, composed of metal heads for bearings on the side pieces and slotted for said rods and having non-metallic Wearing-feces thereon, the side pieces being recessed so 'as to a1- Iow of the metallic heads taking the pressure.

2. In a dust-gurd' the combination of two non-metallic side wearing-pieces, connectingrods and springs for holding the seid pieces together and Wedge-sections let into slots in signed to relieve the said'non-metztilic faces of the wedges of pressure.

In testimony whereof I lia-Ve hereunto set my hand in the witnesses.

WILLIAM M. RYAN.

Witnesses PAUL SYNNESTVEDT, PAUL CARPENTER.

presence of two subscribing 

